Journal of Microwave Power and Electromagnetic Energy (JMPEE)
TITLE	Measurement of the Surface of Textiles During Microwave Drying Using a Thermographic Phosphor [PDF]
AUTHORS	M. Dever, A. Bugos, F. Dyer, M. Cates, K. Tobin, Jr., D. Beshears and G. Capps 1990 25 4 230-235
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Abstract Surface temperature measurements of textile materials during exposure to microwave energy are nearly impossible to obtain using conventional temperature measurement methods. Wool fabric surface temperatures were obtained using laser-induced fluorescence of the thermographic phosphor, europium-doped lanthanum oxysulfide (La202S:Eu^3+). The thermographic phosphor temperature technique enables contact-free temperature measurement of thin materials in areas that are difficult to access or are in hazardous environments. Wool temperatures ranged form 60^oC to 91^oC during a ten minute exposure of microwave energy (2.45 GHz frequency) a nine power settings. Key Words: Fabric, Textiles, Surface temperature measurement, Microwave, Thermographic phosphor, Europium-doped lanthanum, oxysulfide.